Well, you are the owner of a newer type of tamper resistant outlet. It's great to have a safe home, but I have been asked to remove these, as in other newer code required devices that cause problems and many folks hate! With all the arc fault and GFCI requirements for almost every outlet in New construction I think these are, well shouldn't go there. But yes, I have been asked to remove them, but they are code now, so only the home owner can do this.
A licensed electrician can lose their license, even if it is in an elder's home with no kids. Since it's "the law" or code to have tamper outlets, tryTry wiggling the plug back and forth to get these pieces of crap to open... Oops let my personal feelings about Nanny State come through, since almost circuits are protected by GFCI or AFCI these outlets are a problem for many home owners.
In my personal opinion if the circuit is GFCI protected these are absolute waste. Especially when I have had to replace several after different home owners tried different methods including hitting the back of the plug with a hammer. She is ok because luckily it was a GFCI protected outlet. Now the cord on the food processor and outlet are dead though.